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by MARK.WALSH
Tue Jan 12, 2021 6:02 pm
Forum: Ariel Talk
Topic: Out on a boat trip...
Replies: 4
Views: 276

Re: Out on a boat trip...

Great bit of archive footage , really made me smile
Mark
:D
by MARK.WALSH
Sun Dec 20, 2020 12:08 pm
Forum: Main Chat Forum
Topic: Survey of historic vehicles in the UK
Replies: 16
Views: 1003

Re: Survey of historic vehicles in the UK

What a great photo!
The grim reality of where bikes would have ended up.
99% Sure the double headlamp bike is a deluxe heavyweight panther

Regards
Mark
by MARK.WALSH
Thu Aug 06, 2020 8:17 pm
Forum: Electrics
Topic: Battery Voltage Monitor
Replies: 30
Views: 2939

Re: Battery Voltage Monitor

Ralf
I've done the same on my square 4 with an on off switch so it can be monitored whilst running. Really useful and only cost a few pounds. A must with so much reliance on a 6 volt battery feeding four cylinders.
Mark
by MARK.WALSH
Sun Aug 02, 2020 11:50 am
Forum: Four stroke
Topic: loose crankshaft coupling remidies required
Replies: 16
Views: 1712

Re: loose crankshaft coupling remidies required

New woodruff keys oil seals along with a few other bits and pieces from drags arrived the other day to rebuild the drive side. On close inspection the new woodruff keys appear sharper edged than the one I removed (or the original one I kept when I first dismantled the bike). The new one must be a co...
by MARK.WALSH
Sun Jul 19, 2020 11:03 pm
Forum: Four stroke
Topic: loose crankshaft coupling remidies required
Replies: 16
Views: 1712

Re: loose crankshaft coupling remidies required

Well I have lashed the drive side back together just to see if I can produce the noise with vigorous kicks on the Kickstarter. All is silent - unlike before when I tried. I think the next step is to replace the woodruff keys and seals and refit everything properly and see how long it lasts. I will u...
by MARK.WALSH
Wed Jul 15, 2020 10:33 pm
Forum: Four stroke
Topic: loose crankshaft coupling remidies required
Replies: 16
Views: 1712

Re: loose crankshaft coupling remidies required

Thanks Paul I have left the bike over the last few days as I have returned to work from leave. I will do a few more checks but I have tried the crank in different positions to replicate the knock or see if there is movement - strangely now I cant produce the noise at all, and believe me it was loud ...
by MARK.WALSH
Fri Jul 10, 2020 10:53 pm
Forum: Four stroke
Topic: loose crankshaft coupling remidies required
Replies: 16
Views: 1712

Re: loose crankshaft coupling remidies required

well.. I used the pusher tool today to put the coupling back on just to see if I met with the same resistance as when extracting it. I deliberately omitted the woodruff key and the coupling returned to the shaft with reasonable pressure and no 'creaking' noises as when I took it off. I then tested t...
by MARK.WALSH
Fri Jul 10, 2020 4:20 pm
Forum: Four stroke
Topic: loose crankshaft coupling remidies required
Replies: 16
Views: 1712

Re: loose crankshaft coupling remidies required

Nev I think you are right, it looks like minute pickup on rubbing metal surfaces - hopefully I have described the problem accurately. I still cant see any run out on the end of the crank but might do what you suggest, although Id be tempted to try a better coupling gear if I can find one, as that wa...
by MARK.WALSH
Thu Jul 09, 2020 10:17 pm
Forum: Four stroke
Topic: loose crankshaft coupling remidies required
Replies: 16
Views: 1712

Re: loose crankshaft coupling remidies required

thanks Paul I'm hoping you're wrong but equally I could be living in denial. I tried cleaning up the coupling gear centre this afternoon and also the area of the crank which it engages. Hard to describe but a dimpled effect on some of the coupling gear mating surface but also some areas of very smoo...
by MARK.WALSH
Thu Jul 09, 2020 10:48 am
Forum: Four stroke
Topic: loose crankshaft coupling remidies required
Replies: 16
Views: 1712

loose crankshaft coupling remidies required

Hi All Its a while since I have posted here as the old square 4 has been quite reliable (with the exception of oil leaks around the head) until about 500 miles or so ago when I noticed a clonking noise that got progressively worse. I have had a number of issues after the the initial rebuild (about 6...

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